add Cart scaffold
add current_cart concern
add Item scaffold
tried and failed to add passing tests for Menu Controller
modify cart view
add ability to add menu items to cart
prevent ordering from multiple restaurants
implement Cart view and related methods
add quantity buttons, empty cart, and back button to Cart page
align buttons in cart view
add partial for rendering cart view
add partial for entire Cart view
convert all notices to flash messages
add glyphicon to add new menu/restaurant button
add glyphicons to buttons
update all links and buttons with glyphicons
add sidebar with cart
get basic ajax working for sidebar cart view
try to debug ajax issue (still not successful)
add jQueryUI to Gemfile